A light ray is incident upon a prism in minimum deviation position and suffers a deviation of `34^(@)`. If the shaded half of the prism is knowked off, the ray will

Options

A. Suffer a deviation of `34^(@)`
B. Suffer a deviation of `68^(@)`
C. Suffer a deviation of `17^(@)`
D. Not come out of the prism

Answer

C

Explanation

By formula `delta=(n-1)Aimplies34=(n-1)A` and in the second position `delta^(')=(n-1)(A)/(2)`
`:. (34)/(delta^('))=((n-1)A)/((n-1)(A)/(2))` or` delta^(')=(34)/(2)=17^(@)`